DEBUG N8N : WE FIX YOUR BROKEN WORKFLOWS
WHY WORK WITH AN N8N DEBUG EXPERT?
Because when an n8n workflow crashes, your business grinds to a halt. Your mission-critical automations that manage leads, invoices, or client syncs can’t afford to sit idle for three days waiting for a developer to take a look. You need a fast response from someone who truly knows n8n automation inside out. An n8n bug is rarely straightforward — API error 429, mysterious timeouts, mismatched data that breaks the entire workflow, a webhook that suddenly stops responding, or credentials that expired without notice. You could waste hours trying to figure it out. We step in immediately, diagnose the issue, fix it, and get your workflow back in production. Whether your automation keeps failing daily or you’re facing a critical blocking error, our automation agency acts fast to get everything running smoothly again.
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The Most Common n8n Issues You’ll Encounter
EXECUTION ERRORS: WORKFLOWS STUCK OR BLOCKED
Your workflow suddenly stops, a red error appears in a node, and you have no idea why. n8n execution errors are the most common issue: API timeouts, exceeded rate limits, missing data that breaks a node, or random 500 errors that appear out of nowhere. We dig into the execution logs, pinpoint the failing node, and fix the issue fast. Most of the time, it’s a misconfigured parameter, incorrectly formatted data, or an API that changed its rules. We also implement error handling (error workflows, automatic retries) so your workflow becomes more resilient — and doesn’t crash at the first sign of trouble.
INTEGRATION BUGS: API CONNECTION ISSUES
Your API connections stopped working, you’re seeing 401 or 403 errors, or your webhook isn’t receiving anything anymore. n8n integration bugs are common: expired credentials, OAuth needing re-authorization, API endpoints that have changed, or misconfigured webhooks on the external platform side. We reconnect your integrations, update your credentials, check API permissions, and run tests to make sure your data flows properly. We also configure your webhooks the right way (URL, HTTP method, headers) and make sure your n8n tunnel is active if you’re running locally to receive events.
DATA ISSUES: MAPPING & TRANSFORMATION ERRORS
The data coming out of one node isn’t in the right format for the next — you’re seeing undefined values, empty arrays, or failed conversions. n8n mapping issues are highly technical: incorrect JavaScript expressions, wrong JSON paths, loops that don’t execute, or date transformations that fail. We fix your data mapping by fine-tuning expressions, restructuring JSON objects, and adding proper validation. Using the right nodes (Set, Code, Split), we cleanly transform your data and ensure every node receives exactly what it expects — preventing errors before they happen.
PERFORMANCE OPTIMIZATION: FIX SLOW WORKFLOWS
Your workflow takes 10 minutes to run when it should only take 30 seconds. n8n performance issues usually come from poorly optimized loops, unpaginated API requests, nodes processing too much data at once, or misconfigured splits. We fine-tune your workflow by adding API pagination, using splits to run tasks in parallel, cutting down unnecessary calls, and restructuring the logic. The result? Your workflow runs faster, uses fewer resources, and handles higher volumes without slowing down.
FAQ – EVERYTHING ABOUT OUR N8N TROUBLESHOOTING
How much does an n8n troubleshooting service cost?
Pricing starts at €150 for a quick diagnostic (bug analysis + proposed fix). After that, the rate depends on the issue: simple bug fixes cost between €200–400, complex workflow debugging ranges from €500–800, and a full rebuild of a broken workflow starts at €1,000–2,000. For an urgent intervention within 2 hours, an emergency rate applies. You’ll always receive a clear quote once we’ve assessed your issue. If it’s a recurring bug that requires ongoing monitoring, we can also set up a monthly maintenance plan.
How fast can you step in?
It depends on how urgent it is. Express intervention within 2–4 hours for a critical workflow blocking your operations (invoicing, lead management, client sync). Standard response within 24–48 hours for non-critical issues. We first take 15 minutes to assess your problem, tell you if it can be fixed quickly or requires more time, and give you a clear timeframe. If it’s urgent and your business is down, we prioritize your case and step in the same day.
How does it actually work?
You tell us what’s wrong — an error message, strange behavior, or a workflow that keeps crashing. We’ll then request access to your n8n instance (view or edit mode depending on what’s needed), review your workflow and execution logs, identify the root cause, and suggest the fix. Once approved, we apply the correction directly in your n8n, test to ensure everything runs smoothly, and send you a detailed report of what was done. You’ll also get recommendations to prevent the issue from happening again. If you can’t grant access, we can also work together via screen sharing.
Can you debug all types of n8n errors?
Yes, we fix all types of n8n bugs: execution errors (timeouts, rate limits, API crashes), integration issues (credentials, OAuth, webhooks), data problems (mapping, JavaScript expressions, conversions), logic errors (conditions, loops, splits), and performance issues (slow workflows, memory overload). We've already debugged hundreds of n8n workflows with a wide range of errors. If the bug comes from an external API update, we adapt your workflow. And if it’s a self-hosted n8n setup (Docker, server), we can help with that too.
My n8n workflow is running really slow — can you optimize it?
Absolutely. We analyze your workflow to identify the real bottlenecks — loops processing too much data, non-paginated API requests, nodes running synchronously instead of in parallel, or poorly optimized data transformations. Then we rebuild the logic, add splits and pagination, cut unnecessary calls, and fine-tune JavaScript expressions. The result: your workflow drops from 10 minutes to just 30 seconds. We’ve already optimized workflows handling over 10,000 rows that went from 2 hours down to 5 minutes.
Do you fix n8n webhooks that stopped working?
Yes, that’s a common issue. Your n8n webhook isn’t receiving events, or you’re getting a 404/500 error when testing it. We check that the webhook URL is correctly configured on the external platform (Stripe, Typeform, Zapier…), make sure your webhook workflow is active in n8n, test your local n8n tunnel if needed, and confirm that the headers and payload are delivered properly. We also configure your webhooks to handle retries and errors seamlessly.
My workflow keeps crashing randomly — can you find out why?
Yes, random bugs are the most annoying — but we know exactly how to handle them. We dig into the execution logs across multiple runs to spot the pattern: does it always crash on the same node? Is it triggered by large data volumes? Or maybe an unstable external API? We also check for timeouts, rate limits, and logical conditions that might fail under specific scenarios. Once we’ve found the root cause, we fix it and set up error workflows to catch future issues and instantly alert you.
Do you also provide n8n training, or is it only for debugging?
We do both. If you want to learn how to debug your workflows yourself, we offer a complete n8n training program that includes a dedicated module on debugging — reading logs, understanding errors, testing nodes, and optimizing performance. If you just need a quick fix to unblock a workflow, we also provide express troubleshooting. And if you’d rather have everything built for you, our n8n agency can handle your entire automation project from start to finish.
Can you migrate a Make/Zapier workflow to n8n and debug it?
Yes, we regularly handle Make → n8n migrations or Zapier → n8n transitions. We rebuild your scenario in n8n while adapting the logic (since n8n nodes work differently), reconnect all your integrations, test the data flow, and debug any errors that appear. In most cases, we also fine-tune the data mapping or rebuild certain logic conditions. We can even train you on n8n so you’re fully autonomous after the migration. If you want to compare both tools, check out our Make Agency page to see the key differences.